That's not necessary true, I'm young and don't have any social media, and really only use my phone to check out this site and a few other Disney/universal fan sites.
Fahrenheit 451 is a really powerful read, specially in this current era. But let me note that technologies like phones are not bad, in many cases they allow mass quantities of individuals to inform themselves about current problems our society is facing, possible solutions, and what they can to help as well as connect to other people we otherwise couldn't.